A day after Oscar polls closed, 20th Century Fox Home Entertainment has announced an April 15 street date for “Juno” — and indicated it will be for sale at Starbucks (apparently the first new film for sale there; they carried “White Christmas” a couple of years ago) as well as more traditional outlets. “Juno” will be available in single and double-disc versions, as well as in a Blu-ray version that includes an additional digital copy that can be downloaded to an iPod or an iPhone. Presumably, you’ll have to wait a while for a hamburger-phone edition.