I have a client whose app is targeting firmware 4.9 b5061 and whose feed is transmitted over HTTPS. They are looking to disable SSLv3 (making the feed TLS only) and are asking if this will be supported by Roku. From my research it looks like it will, but I would like to get a confirmation from Roku.
We have disabled SSLv3 for all our servers due to the POODLE vulnerability. We still use SSL v1, and roku connects using that with setcertificatesfile without problems. I'm not sure if it is or will use your requested TLS as we haven't tried it. We didn't need to change any of our existing channel code for the SSL version downgrade.