this is not happening.
Nothing is this news makes sense
I respectfully doubt this.
I believe it for a number of reasons.
1)Snipes has been teasing it for months/years.
2)Disney said they ARE in the business of making R-rated Marvel movies, up to and including keeping Deadpool R, once the Fox deal is finalized (which should be any day now, oddly enough).
3) They apparently already have a script ready. It's said to feature his daughter who they were gonna use in a cancelled Blade comic.
I also don't think Snipes would agree to a Blade movie in the MCU unless they agreed to drop the cuffs and let him get the movie HE wants to make (read: R-rated, balls-to-walls vampire-slaying goodness, much like the comics and New Line Blade films), which is coincidentally what Ryan Reynolds said about Deadpool (that he won't do it unless it's R, he's said this repeatedly).