Recently installed DP2 and find it to be a huge improvement over DP1... ...of course. Much faster Mail push works across all devices (including Android) Minor to no compatibility issues with installed software (and I have dozens of apps). Only initial problems I see... * Newer (beta) versions of Chrome tend to crash when viewing web pages, particularly hitting back page * TotalFinder does not work with this release. After a few hours of use I would go as far to say that for most basic of things, this is a very stable operating system. I intend to keep it on my primary computer right through the betas to final GM.