Wouldn't Android need to be ported to IBM's Power architecture first? I just quickly Googled this but Android officially supports ARM and more recently MIPS and x86. That rumor just sounds like click-bait. Nintendo would only need a fraction of what Android provides that it might actually be easier for them to make their own Linux based OS rather than stripping Android down to the essentials.
Nintendo working with Epic to make Metroid would be huge. Asking one of the most well known and popular Western games companies with arguably the most pervasive games engines to retool Metroid would do wonders for the series' reach and popularity. I don't really see that happening but it would explain a lot, namely Mark Rein's unbridled glee when speaking about Wii U. Again, sounds like click-bait.
The online multimedia thing seems like a given. Nintendo is forgoing disc-based movie playback again but they've embraced Netflix and Hulu. I suppose if you read between the line, employing Android would give Nintendo direct ties to Google Play and even more online media. I suppose Nintendo couldn't ask for a better partner. Well, probably Apple but that's not happening unless they practically hand the keys to the kingdom to Tim Cook and Steve Jobs' ghost.