Old Source Files will Work we have already tried in the Tally18 exe. Date to release Tally 18 is Yet to be decided licensing part is under construction.
There is no any launch date confirmation. But may be launched in next quarter. Also increasing price of Tally 18.
Tally has not good software engineer otherwise they have not failed to release it for the last one year.
Greetings from Tally! With reference to your mail regarding, we understood that you got an information that the Tally 18 launch will be reversed. We would like to inform you that as planned one of the major release will be launch in the market shortly, but the name of Tally product of our major release will be 'TALLY Prime' Instead of 'TALLY 18'.
there is no confirmation on new release date even the Tally partners have no knowledge of its release date, as they haven't even been given a demo of it
This mail received from Tally. We had sent mail to Tally asking regarding Tally 18 launch date. They replied above statement. Tally 18 reversed time being.