After less than three weeks since the last leak, a new pre-alpha version of Windows Vista's Service Pack 1 has been unleashed on P2P sites. Provided by the WinBeta group, the new version is build 6001.16633 (the previous was 6001.16549) and comes under the form of an installer that weights in just under 700MB.

Given the frequency of the new builds we might be seeing the final version of SP1 quicker than expected although it is very unlikely that we'll have a Vista (with SP1) Christmas.