I think a large part of this stems from the major mistrust between Shady Records and their fans.
They always promise something and don't deliver if it's not Eminem.
Even though I doubt it, maybe Shady really wants to try something different this time around. I personally wouldn't mind have a tight and concise album cycle for TBF, it might enhance the experience and be a lot more satisfying than:
Box Chevy V in January 2014, music video in April
scrapped single in July
Till It's Gone in September 2014, music video in October
Whiskey In A Bottle in February 2015, music video in March
American You in March 2015, music video in early April
And finally album in late April.
Lmao fuck that shit.