I discovered this issue as well Monday Feb 21st at 8pm when I tried to file before they closed net file at midnight EST, called Turbo tax in the morning to find out the CRA System has not finalized the business forms for the program to pull, so they say I'm taking their word. So I called the "CRA" they had no clue what I was talking about even the senior CRA staff.
But they told me if they receive enough phone call complaints in the next few days as to why the forms aren't finalized they will look into it but could take a few days to a week to resolve.
They also said that you need to verify that you qualify to netfile now, as they have made changes to qualifications to Netfile is years so before you call the number I put at the bottom or you can "Google" CRA phone number.
First go to their website at "Canada.ca"
in the top right search box type in the word " Netfile"
In this window scroll down to "File your taxes online: Understand NETFILE"
In this window click on the button at the top box that says "NETFILE eligibility"
Review the very, very long list of exclusions, and only if you don't meet those then call the number and ask the representative to put in a request for when the forms will be ready
If they receive enough unhappy citizens complaining about the forms not being ready on Monday, it will help get it expedited and let them know that you did review the list items that would make you ineligible and that the issue is the program won't let you click on the "Netfile button" because the business forms for most people is the T2125 but make sure you provide you exact business form number to them that you are filing if not the T2125.
But it you meet any of the NETFILE ineligibility you will need to print and mail it in once the forms are finalized (don't think you need to send receipts, they will call you for anything they need to see)
Hope that helps, and saves you the over 2 hours it took me to get this information, glad to know I'm not alone in this frustration. I think Turbo tax needs to be on them to get a date to provide us.
The CRA number is [phone number removed]
Good Luck