I'm not a partner so have never been to the partner site so I don't know what additional information it contains but for me all of the info I have ever needed has been contained in the release notes. Just make sure you read them very carefully. If you have never been through the update process before I would highly recommend scheduling the first few with HPE support and watch then and ask questions. What I did was join the HPE Room from a VM, and recorded the session, most tend to use Putty so make sure to have it installed and configured to log to a file so you can later go back and reverse engineer it. It's been probably 3 or 4 years since HPE has done one of my upgrades so I can't speak to their current process but that is what they did then and is how I learned how to do the upgrades. For some reason HPE does not like to share information, drives me nuts. I would also recommend getting to know your local HPE support guys, if you get in good with them and show them that you are competent they may share a lot of info and tools with you.
You can also sign up for product alerts so you are emailed anytime a new patch or upgrade has been released. Just use your passport to sign in and then select the products you want notified on.
http://www.hpe.com/support/e-updatesFor the most part, and generally speaking, upgrades are easy but make no mistake you need have a good grasp of your environment and be wiling to put in the work it takes to read all of the release notes and be disciplined in how you prep and deploy. This needs be be approcahed for a 360 point of view, Array, Host (OS drivers, FW, Host Explorer), FC Switches, SSMC and VSP. If you are not one of those people I would suggest letting HPE or your partner handle your upgrades. Also, the upgrade checklist I provided is not static or all inclusive, portions of it change according to what updates have been released.