AFAIK there is no posting of what dividends are going to be... we only know when they arrive.
Dividends thus far:
Div Pay Dates Div/Share
02/29 (IPO) 0.023545
03/06 (IPO) 0.019163
03/13 (IPO) 0.023786
03/20 (IPO) 0.025998
03/24 (IPO) 0.007508
03/27 0.003775
04/03 0.002556
04/10 0.006956
And Today:
04/17 0.00696732
Hope this helps. 03/27 and 04/03 were due to increased costs for something or other (can't remember anymore).
IPO dividends were higher, since there was something in it along the lines of "100% of profits goes to share holders excluding BitFoundation shares (230k shares)".