Sony informed PSP developers about the news via a message, part of which read:
"SCEE will no longer be selling the PSP Development Tool (DTP-T2000A) or Testing Tool (DTP-H2500A) past November 15th. Please order in advance if you require these development units.
"We will advise you when a new model becomes available."
Realistically a new model could simply be an upgraded version of the original PSP development tool kit. Or this could be because Sony wants developers to switch to their new PSP2 kits. The likelihood is both eventualities. Sony told Kotaku that, "Due to the certification on the current development and test tools expiring, we will be stopping selling them on the 15th November. However, we will continue to provide loan stock for registered and new developers, until a new certified model is available."
We'd be amazed if this had nothing to do with the PSP2 to be honest. We're already hearing that Sony are shipping kits off to as many publishers as possible to ensure a huge software launch line-up for the next piece of hardware. Honestly, this is an exciting time for the future of the PSP platform right now. Pivotal in fact.