As we've stated many many times before. The turnaround time on non-expansion patches is usually a few hours, to 2 days at most. More often than not, we'll have the bot updated before servers even go back up, but delay pushing a build until we're satisfied that everything works correctly.
Everyone seems to think that The 5.0 patch is our normal schedule for patches, however it's not. MoP brought a ton of changes with it that we just flat out weren't prepared for. Blizzard doesn't make giant changes like that with content patches. Only expansions.