The APB Reloaded blog has been updated with the latest news about the ongoing closed beta patch process as well as the news that the East Coast server will officially be moved to Washington D.C. later this week. The goal of the server move is to improve latency for players. The APB Reloaded open beta is scheduled to begin on May 18th.
This week we are going to release Patch 80 on Tuesday night US time, and we are also going to perform the "formal" move to the "real" US-East location, in Washington DC later in the week (probably on Thursday this week) - which should really improve latencies for everyone east of the (imaginary) Dallas / Oklahoma City / Wichita / Omaha / Sioux Falls / Fargo line across the US.
Or - put a different way - if you live in Dallas - you should have approximately the same latency to either side - but since local cable conditions vary wildly (for example - Comcast LOVES peering in Washington DC and if that's your provider certainly go that direction), it's entirely possible that you will in fact be much better to one location specifically (so test it out once it is live).
Read more on the APB Reloaded blog.