In the first trailer you see the diamond park cutaway and right then you see a eyebot float across...more than likely that means enclave..or maybe even new pre war surviving faction..thoughts??

Eyebots were a pre-war invention, used by many people.

They are not tied to The Enclave beyond The enclave hijacking them and using them as propaganda bots in the D.C. area.

Yeah are seen in Fallout 1 and 2 as well, albeit with a different appearance.

I know I'm just sayin..it seems you need decent tech aptitude to keep these things going..I'm not sure which other factions would use them

None of it is proof that the Enclave is in, but we do get the choice of their Advanced Power Armor in our customization options, and there was patriotic music playing for a split second in a museum shot during XB1 demo (although patriotic music would be appropriate for that location).

Eyebots were a pre-war thing so it's not a really sign of an Enclave presence in Boston.

Other than that I'm glad their back, I just hope they don't redesign them too much like the deathclaw which is basically a dinosaur now.

Were eyebots released commercially before the bombs fell? I know they were used as maintainance/repair drones and spy/propaganda devices, but did the radio-playing civilian model ever see the light of day?

Yes, there was even a pre-war TV show featuring them.

The Institute.