Apple is reportedly developing a new iPhone that will feature a bigger screen with a curved display and enhanced sensor.

According to sources of Bloomberg, the Cupertino-based company is planning to release two models by the second quarter of 2014. The screen sizes are 4.7 and 5.5 inches and have glass displays that curve downward. It will also have sensors that can detect different pressures of touch.

However, the iPhone curved screen is still under development and plans are not yet completed. The source said that it is most likely it will be delayed to third quarter of 2014.

This year, Apple focused on fingerprint scanners for security but next year, it seems that it will be all about "pressure-sensitive technology" This technology will allow a touchscreen to detect finger pressure which offers 3D touchscreen interaction and opens apps based on the level of touch pressure.

Apple is in need of new models as people were not that impressed on the latest iPhones revealed this year—the iPhone 5S and iPhone 5C. The company revenue growth for the current quarter has been the slowest since 2008 while its arch-rival Samsung is continuously growing its shipment rate. While the iPhone 5S is in demand, its cheaper counterpart iPhone 5C is the opposite.

Apple spokesperson Natalie Kerris refused to comment about the iPhone curved screen.

Samsung, on the other hand, has already released its Galaxy Round. Once again, the Korean smartphone maker is a step ahead from the competition as it becomes the first to introduce a curved screen to the market in October. It features a 5.7-inch OLED curved screen, a 3GB RAM, and a 2.3 quad-core processor with an approximate price of $1,015 once converted to U.S currency. It is currently selling in South Korea and there is no official announcement yet if it will be offered in Europe and North America.