Suppose I have a version of an application that I sent to apple for review today that will be published to the public after 3 weeks. Meanwhile, I also have the next version, which should be reviewed and released to the public in a month.
SO, my question is, can we simultaneously introduce two versions of the same applications (before the first one enters the market)?
No, you can’t. You can have 1 version for sale, and 1 in the review, at the same time, for a unique application identifier.
No, you have to wait until the first one is considered.