In 110V land? I see FestoolUSA.com only listing #575389 and #575390, both being EQ-F. F suggest something got updated, but the lack of B means no brake.
Pictures look generic, those are from the 230V EBQ version.
Euh, didn't the F stand for F(*cked up units), meaning imperial scale? I think European catalog has the F for fast tool change, but it's been used for all kind of things, so I dunno.
As far as I know the TS75 never got updated like the TS 55 did; no new glidepads for the rail, no fine-adjustment for depth, no dual-scale depth gauge.
Oh, btw. The pictures on FestoolUSA TS 75 page includes this one;
That is a TS 55 R pictured, definitely not a TS 75. And oh; with metric scale!