Unless there is rather clear language in the lease that allows the apartment to do this, you do not have to sign a new lease prior to the old lease expiring. So I would either not sign or review what they want you to sign and make sure that you are not losing various rights. Be careful.
This answer is for informational purposes only and is not legal advice regarding your question and does not establish an attorney-client relationship.
It is not uncommon for the larger apartment complexes to offer the OPTION of a renewing the lease (signing another lease) while your current lease has not yet expired. However, it is only an option to renew.
No apartment complex, or landlord, can ever force you to sign a lease agreeing to live somewhere that you have no desire to live at.
They can ask you to sign another lease before the old one runs out. However, you have no obligation to do so. He probably just saw a new landlord attorney who advised him to change some language on the old lease.
The information provided in this answer does not create an attorney-client relationship. If you are interested in his legal services, feel free to call Chris at (303) 409-7635 at his law office in the Denver Tech Center. All initial consultations are free of charge.