One of my long-standing favourite shops in Tokyo’s famous Akihabara district, Akizuki Denshi, has just started selling the WROOM-02 (that’s Espressif’s own version of the ESP-13, just in case you haven’t been paying attention) with an adapter PCB kit which brings out the pins to a breadboard-friendly connection. It’s quite novel.
The kit comes with the WROOM-02 already soldered onto the board, but the header pins (although included in the package) need to be soldered to the PCB by the purchaser. The kit (including the WROOM-02) is priced at a very reasonable 680-Yen (that’s about $5.70) plus shipping. Unfortunately, they don’t ship internationally.
They are also selling the bare PCB as a separate item for just 120-Yen ($1.00).
As you can see from the photo of the bare PCB, all of the pins are broken out to the adapter (including the three, separate grounds). As far as I can tell from the photos and from the text, there are no pull-ups or pull-downs; just the pin connections and nothing else.
Akizuki have a long history of producing kits and PCBs for the hobby market in Japan and a look at the “kit wall” in their shop is a good, barometric indicator of what’s hot in the embedded community here (of course the challenge is actually managing to elbow your way in there to be able to see it).