The device has just been launched. It may be too early to anticipate any kind of feed back on heating Issues with the phone. However, it uses Qualcomm Snapdragon 615 processor which has been reported to have severe heating issues on the original Yureka . But, it must also be worth noting that the recently launched Xolo Black also uses the same processor, yet has a control over heating. Moreover, Yu has paid heed to reviews and as such has come up with solutions. I feel you should not feel any heat issues with the device. Yet, if you need a confirmed answer to this question - I would advice you to wait till the device is officially available and reviewed.
Current set of reviews don't report any form of heat issue. So you should wait for a few weeks for that. Also if there is any android update comes then I guess you can see the performance changes. As noted earlier same processor in the other manufacturer phones are showing the heat issues. This could be because of the mismatch between other configurations. So for now I think Yureka is a good product with no heat issues.
Yureka YU+ is very good but its performance is not very good as compared to Lenovo k3 note. Most of my friends are using this mobile. It gives very good performance most of the time. It gets heated up while playing games. So it is not harmful and does not give any problem.
No, Yu Yureka Plus doesn't face any heat issue. Even this smartphone was a challenge for Micromax to prove itself as the previous Yu Yureka smartphone only lacked because it faced some serious heat issues while playing HD games.