The airline says there are enhancements to every aspect from airport check-in to in-flight amenities and catering design.
Brand new Premium Economy Class tableware will be introduced on February 1.
Premium Economy Class passengers will enjoy a flying experience with personalised services approaching that of Business Class, it says.
Other upgrades in the Premium Economy Class include in-flight amenities and food and beverage services.
These include single packed hand wipes, two-toned quilts, slippers, and noise-reducing headphones for a more comfortable experience on long-haul flights.
Food and beverage options has been expanded to the same sparkling wines and caffeine-free herbal teas served in Business Class, as well as a range of main courses which are exclusive to online pre-orders.
The free luggage allowance for Premium Economy Class is two pieces of luggage each weighing up to 28 kg, which is the most of any domestic carrier.
Premium Economy Class passengers flying on the 777 and A350 models can also enjoy the free in-flight Wi-Fi service with unlimited web browsing and text messaging.
Upgraded ground services are being introduced for Premium Economy Class as well.
The check-in process is being expedited through priority check-in counters and Premium passengers are also entitled to priority boarding.