We here don't really know Supposedly sometime today 7 Feb
BUT
It's still 7 Feb until 1159PM tonight....and they could always decide the software for that isn't quite right yet and delay another week. Yes....paper forms are on the IRS site, but the software's implementation is much more complex, and the IRS needs to approve the Software's implementation...that can add a week or two.
Come back tomorrow and check again
Intuit App
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Don't rush...we have tons of folks begging to get their e-file stopped because they received one more tax form in the mail they somehow "Forgot" about.