In terms of how much I'm reading into it I'll put it this way - I saw that Tweet 3 days ago and didn't think it was relevant enough to post. Really I only posted it since we have a thread on offseason performance, and we're not going to get much in the way of updates there. At least we haven't historically.
JT is probably still working on dive tracks with the BBs and timing routes with the WRs as he did last year. Guys are "really getting after it in the weight room". In terms of anything measurable/different on the news front, I'm not getting my hopes too high.