They removed the 301 banners from the BGS in the glasgow area, but, when the spur is built; isnt that considered 301 or will it be signed as 896? 
The response I got from DelDOT was that the spur is expected to just be signed as a long ramp: To US 301 South and To DE 896 North.
What I really find interesting is that not only did those 301 shields in Glasgow say To US 301 and the reassurance markers only refer to 896, but in the old Street View you can see "To US 301 North" pointing east on US 40. I know US 301 officially ran unsigned from Glasgow to I-295 via US 40, but was it signed recently enough to appear on those new-ish signs, and if so, why the "To"?
I disagree with covering up "To US 301 south," though. That will still probably the quickest way from there to 301, and will especially be so when the spur road is built. It also makes the "To" there actually correct.