Not at all. I gave 1.3.1 a shot and it still killed battery. I thought I would try again with 1.3.2, so I installed last night at midnight and then restarted the phone. Once my phone came back up, it showed 86%. When I woke up 7 hours later, my phone was at 30%. The last time I uninstalled 1.3.1 and went back to the stock version on my Evo, the battery dropped maybe 10 while I was sleeping. All the new FB updates are still killing my battery.
Uninstalled.