In February of 2013, Sony announced the PS4, their 8th generation console and the successor to the PS3. Nintendo, on the other hand, released the Wii U, the successor to the Wii, so since both of these consoles will go head-to-head with each other along with Microsoft's next Xbox console, will Nintendo see more ports?
The original Wii, released in 2006, had less than 100 MB of slow RAM. There was no way you could downscale a game to that size without sacrificing important detail. Over the years, developers have learned new tricks with the PS3 and Xbox 360 engines, but the Wii's engine was always inferior. PS4 games are able to be downscaled to a PS Vita version which is slightly less powerful than the Wii U, so since the Wii U is 4 times more powerful than the PS3, power between each consoles isn't as dramatic as it was in the 7th generation.
Games for the PS4 and Xbox 720 can easily be ported to the Wii U once developers become familiar with Wii U's architecture. PS4 and Xbox 720 will have very similar architectures, so developers usually aim for one of these 2 systems, but since Wii U has more to offer for the gameplay aspect, this will eventually result in developers coming back to Nintendo for third-party support. This won't happen soon, but it'll happen before 2016.
The PS4 is a very powerful system and if the same version of the game is released for the Wii U, the difference will be visible, but not too dramatic. Of course, PS4 exclusives will never be released for the Wii U, but most multi-platform games will be hitting more Nintendo consoles in this generation once sales pick up. The 8th generation race hasn't started yet even though Nintendo has a small advantage.