When I read your question, I felt that I had to reply because I have been taking pictures for over 35 years and I have seen a lot of changes. Yet, the changes in the last year have been very significant. Up until the last year, we say several types of digital cameras - point and shots (P&S), cameras have interchangeable lens and electronic view finders (EVFs), strict DSLRs, and cameras that could do both video and still pictures. Each camera had its pros and cons:
P&S: pros - light weight, convenient, easy to use.
cons - small sensor (picture quality suffered), had to focus using the back lcd (I prefer a view finder), taking pictures using manual a pain, slow (tracking, autofocusing)
Often best for travel and for still subjects in bright sunshine.
EVFs - pro - light weight, interchangeable lens, offered more control (manual was often better), and many cameras offered modes (e.g., artistic modes on the Olympus); better at taking movies.
Cons - the view finder was often darker than an optical view finder; slower autofocusing, often unusable when light poor or when trying to use higher ISOs. Bigger than the PS&.
DSLRs - pro - good view finders; fast autofocusing; good camera control; durable; fast in taking pictures
Cons - heavy weight; movies not as good as with other platforms (a limitation in my mind of the moving mirror foudn in DSLRs); more expensive (both the camera body and the lens).
There are other types of cameras like the electronic range finders (e.g., Leica M8, M8.2, M9, Fujifil XPro-1). However, this is not a common system - I have the Leica and love it but it is not for everyone. I will also skip over the new cameras coming from Nikon (V1 and J1) and Canon (EOS M) because I have not worked with them and they really confuse me from a specification/performance perspective.
In the last year, several changes have occurred:
1. We have seen some higher end P&S cameras that are simply superb. Specifically, the fujifilm X10 and X100. These cameras offer a view finder with the X100 offering a hybrid (it can be either optical or electronic). Larger sensor, better camera controls, great shots. I have both fujifilms and they are superb (I happen to prefer the x10 to the more expensive X100).
2. Along with the Sony NEX series (interchangeable lens, large sensor, good control and on the NEX-7, a viewfinder - yeah), Olympus has introduced the OM-D E-M5 and Sony has introduced the A55/A57/A77. What these latter cameras give you are light weight, better EVFs (in the case of the Olympus), faster shooting speeds (up to 10 frames per second for the Sony A series), and better movie taking capabilities. These cameras are starting to erase the performance differences found in high end DSLRs (for the most part). I think that this is what you mean by hybrids.
These new cameras are amazing. I recently bought an Olympus OM-D because of its performance and light weight. I was asked to speak in Utrecht, Netherlands, in June. Since I had built in a day for travel recovery, I decided to take a camera. The question - which one. I could take my Leica M9 (great pictures, great street camera, but limited focal lengths, not fast because of manual focusing), my Nikon D3s (heavy but a tank - able to take great pictures and take a beating) or the Olympus OM-D. I took the OM-D with four lenses. The OM-D surprised me. It was light (the entire system with flash and lenses) weighed less than the D3s with one lens. The EVF was bright and very good on the refreshes (how quickly the EVF displayed changes), the performance under low light/high ISO conditions surprisingly good, and movies excellents.
These new generation EVFs and high end P&S are blurring the boundaries. They are giving photographers like you and me the ability to take better quality pictures and movies with lighter bodies. They are also faster. To me, as we see the evolution of cameras like the NEX and the Olympus OM-D continue, we should see cameras that are good enough/fast enough to take sports/action shots. The old adage that you need a fast DSLR to do action is becoming less relevant.
This is a good time to look at these new generation cameras. Some final hints. Know the type of pictures that you want to take (movie versus still, action versus landscape). Get to know sites like cnet.com, cameralabs.com, wired.com, and dpreview.com for their camera reviews. Go to a good quality dealer and play with the cameras.
Hope that these comments address your question.