I'm having trouble finding information on a suitable replacement for the Yún with long term support since it is being retired.
This is for you and other people reading this post.
As many of you know, there is a split with the Arduino organization. The two are generally two Internet domains that encompass the two parties - arduino.cc and arduino.org. To be clear on the separation, arduino.cc does NOT have the Arduino Yun, but is creating a new product with a new partner. Arduino.org has the Yun, Yun mini, Tian, Uno wireless - and other similar products.
There are several issues for developers.
- what are the new products
- support for hardware
- support for software
- will some libraries still be support, like Bridge
- forum support
For .org, it is creating new products and we see them every few months. This is organization is being helped by doghunter. Neither the .org or doghunter have stated any allegiance to open source. The issue this creates is that some developer are unlikely to contribute to the massive software pool mostly available on .cc One small note, if you look on the back of the original Yun you will see a "dog Hunter" imprint. It is underneath the Ethernet port, on the back side of the PC board.
For .cc, which is known as Genuino in most part of the world - expect the USA, they have struggled to produce significantly new products, and their new partnerships with Adafruit and Seeed have not yield any significantly new products. The challenge is - how will they address the growing IOT market - no response yet on this.
On the libraries, both groups appear to be making advancement. However, new contributions are continuing with .cc, not as much with .org.
On the support forums, .cc definitely had the advantage.
specifically, nginx or Apache is not recommend as a webserver - both are too blotted. There are other alternatives. I'll let others make suggestions, however bottle is very popular with developers.
As for suggestions of other hardware, unless Arduino and Genuino get their collective acts in order I am not recommending either - at this time. Personally, I'm considering other products like RPi and Metawear from MbientLab.