In a rare move, Apple has notified developers working on the forthcoming OS X 10.8.4 update that it is closing down the seeding of new betas, essentially signalling that release of the update is likely to come next week. In the message, the company explains that scheduled maintenance on its Software Update project requires it to close existing projects and that the system for developer updates will be down from today, Friday the 31st. Apple also took a moment in the message to thank developers for their efforts in helping finalize the software.