Yes, Schedule is not current. Though there is an option of downloading the entire schedule. Not sure if this is current. Difficult to make a booking at times as it just times out.
KL/SIN to MAA is right now in a bit of a mess. Pilot shortage and Air India's plans to hijack AIX for a while are to blame. The priority now is to maintain the Kerala-Gulf schedules and then stick to the commitment made to have Amritsar-Dubai and Mangalore-Dubai.
Fares are not really competitive. Consider this also. IA's daily MAA-KL Airbus A320 leaves MAA at 0205 am. AIX's 737-800 MAA-KL departs 30 mins later!!!
Cheapest AIX fare is on Saturday night (MAA-BOM) at Rs. 999. There are giant hoardings announcing this.
***
Also check the thread "Where AI Express is off to next" for details like what you get on board.