All I can say is it's about time. While most BlackBerrys on the market have either launched with OS 5.0 or been upgradeable for some time, the Verizon BlackBerry Tour 9630 was stuck on OS 4.7. Not that it's a bad OS by any means, but many in the BlackBerry community felt as if the Tour 9630 (and more specifically, the Verizon version) was being thrown under the bus by Verizon and/or RIM.
There were rumblings in the community that the .591 build was less than perfect, so it will be interesting to see how it pans out as an official release. Go get your download on, and let us know how it performs!