Probably limited upside, yes, but could swing towards 90. Would normally expect a close below 90 on a day like this.
A signal nonetheless.
90 is just a general guide line. Nice momentum here and no sell signal yet.
EDIT: And as I wrote that - momentum slowed down. Probably a short term top here. I'd say the up side is capped at 92,50 by the close (04:00).
To be a bit more precise - a close below 89,25 would be expected, but might not be much lower.