We just told you about the upcoming release of an untethered jailbreak for Apple TV 4.4.3. Just like TinyUmbrella’s developer mentioned, now might be the right time to save your SHSH blobs for your Apple TV:

Sorry I skipped this version. I’ve updated TU to work with Apple TV 4.4.3. For those of you with Apple TV 2 – be ABSOLUTELY sure you have your 4.4.3 SHSH for your device… It may be QUITE important.

Better safe than sorry!