Probably sort of obvious with the announcement of an additional episode and the increased length of the UC Project into 2014, but the probability of MSG: The Origin being animated for TV (and airing in the fall) over being an OVA is pretty much confirmed now. AGE seemingly concluding with its 3rd arc (at this time, there has been no annoucements regarding future developments in the AGE universe) also likely points to The Origin being a TV series; though most assumed it was so from the start.
Lastly regarding Unicorn; there seems to be a good possibility of the L1 Junction story being cut out (thus removing the Republic of Zeon from the story, unless they merge these forces into what Ep.6 will cover; everything preceeding the race for the Box). Fukui and the OVA staff seem to want to build upon the novel's ending, especially since they voiced a future hope to continue animating and adapting the novels and manga that illustrate the 27-year gap between Unicorn and F91; the OVA ending will perhaps better address the shorter-term fallout from UC's events (as the novel somewhat neglected to do much of this, outside of a brief "2001"-type vision of the future for Banagher, F91-Victory) and link stories like Hathaway's Flash or F(ormula)90 to the post-Unicorn world.
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