The RC of SP1 is being released today and can be downloaded from here. Upgrade from RC to RTM is supported. There is also new dedicated newsgroup to SP1 related issues: Microsoft.public.opsmgr.sp1.
The OpsMgr SDK and Authoring console is not available in connect website any more is it ? Are they been released already? If then, can you provide me the download links? Thanks.
It was pulled off by us. It will be put back up when it is ready (hopefully soon), however, I do not have an ETA.
System Center Authoring Console RC is now available for download here