Yes, right now the lowest Dothan Pentium M cpu (2mb L2 cache) is the 715 1.5 -- on the upgraded notebooks it will be an even number so the 715 becomes a 720 I think ---
Also, the manufacturers like Dell and HP/Compaq are introducing new models so that you will know what is the upgraded notebook. HP/Compaq pulled the HPZT3000/Compaq X1000 from its custom order hpshopping.com screens yesterday so they may have a new model launching as well.
You need to look at the manufacturer websites (HPshopping.com, Toshiba.com, etc) to see the new models and the specs and then shop at retail if you insist to avoid getting a closeout model.