So far a few of us have noticed a small increase in drivers
included in this build. It may take a few days to find out things about the 64bit 7077 while some are wondering about going back to the 7068 for various reasons.
And yes some favored the 7057 over the 7068! So far the 32bit 7077 is working out here except for a repeat problem seen with a tv tuner card in use here on both 7077s while the 7000 64bit saw that working well! A few installs later the 32bit 700o saw that work.
The one thing to remember is up until now everything has been in beta form where we are going to be seeing the RC escrows followed by the RC1 in May hopefully made public like the 7000 there. The advantage of the 7077 right off however is seeing the expiration as 6/1/2010 over the previous builds months earlier for any long time run.
Your circumstances like hardware combination, programs run, and a few other things are what will often determine which build appears more stable until the RC1. By then most of the bugs and features will have been worked heading towards the RTM.