Where to find end of life support information for OMI

Can anyone point me to a url or document which describes the support lifecycle of OMI? I am looking for the general timelines in preference to a specific answer to a specific version of OMI.

Most other vendors have support information where a product is in like general support, technical support, extended support etc. ie 2 years after GA is general support. another 2 years for extended support. 4+ from GA out of all support. If not related to the release could be related to versions. ie only support back 2 versions etc.

I cannot seem to find anything of this nature on the website.