What about InDesign CS5 SDK.

No. It is not wrong information. I am sure that Adobe will release InDesign CS5 see the web site at the bottom

August 12, 2009

Adobe today announced that future versions of the Creative Suite for the Mac OS would no longer support computers with the PowerPC chipset. That is, CS5 and later will only support Intel-based Macs.

Wow.

Well, given that Apple itself is dropping PowerPC support in Snow Leopard (10.6), it’s kind of a no-brainer that Adobe would follow along. But it’s still a bit of a shock to see it in writing. I’m glad that Adobe has released this information now, so that companies thatexpect to upgrade to CS5 will have time to ensure their hardware is upgraded, too.

In the meantime, Adobe notes: “Those who own Creative Suite 3 and Creative Suite 4 will still be able to use the software on either a PowerPC based Mac or an Intel based Mac and do not have to upgrade their software. However, Adobe will not be developing for this platform other than for critical issues that may arise.”

http://indesignsecrets.com/adobe-dropping-support-for-powerpc-macs-in-indesign-cs5.php