Apple TV Now Accepting Larger tvOS Binaries

So will this help Tablo in some way when it comes to the app on the ATV4?

I don’t think the Tablo app is size constrained now.

But I wonder if now a bigger cache of guide data could be stored locally on the ATV to speed up the guide.

That announcement has nothing to do with local storage limits. It only applies to the download size of the application binary. And additional on-demand resources.

I don’t know (off the top of my head) what the local storage limits are, if there are any. But I doubt that guide data could approach any local limit. Guide-only data, even for two weeks and 50-100 stations, would be megabytes at the most. Not gigabytes.

Oh well. Based on performance it appears they are doing zero caching.