I’m curious about what kind of new SAMs we can expect. I’ve been trying to list some of them, but there’s often a huge jump in performance depending on the nation. Here’s what I have so far:
USA: SLAMRAAM
Depending on the variant, SLAMRAAMs have anywhere from 15-20km range (120A/B) all the way up to ~40km range (SLAMRAAM-ER).
Germany: IRIS-T SLM
Germany never used the IRIS-T SLS, but they did use the SLM. The problem here is the SLM supposedly has a range of ~40km, which is a HUGE step up from what we currently have. It would put it on par with the SLAMRAAM-ER, but I’m unsure about Gaijin adding something so strong this soon. There are, however, plenty of other multi-vehicle systems available with comparable ranges, so it’s possible we get these longer range SAM systems.

Russia: SA-6, SA-11, SA-17, and/or SA-27
There are a variety of different SAMs that Russia could get. The range on their missiles tends to hit marks of ~24km, ~42km, and ~70km maximum ranges when targeting aircraft. I do not know nearly enough about the intricacies of each of these SAMs, I am just aware that there are plenty of options for Gaijin to fill more and more missiles in if necessary.
Britain: CAMM Sky Sabre
From what I was able to find, there are various CAMM system modifications, ranging from 25km to >40km (CAMM-ER) to >100km (CAMM-MR).
Japan: Tan-SAM Kai II, maybe Type 03 Chū-SAM?
The Tan-SAM would have ~15km range Type-11 missiles, which could be rather low compared to the rest of the missiles here (aside from maybe baseline SLAMRAAMs). The Type 03 makes a huge jump to >50km though, and I’m not aware of any in-between vehicles. Feel free to let me know if there are better options for Japan.
China: Type 625E, maybe HQ-11?
We already know the Type 625E is coming, and we know it’s the E because of the shape of the mirrors (thank you to @Yontzee here) The Type 625E has a max range of ~17km, which puts it more on par with the Pantsir. The HQ-11 has a range of ~30km, which is still shorter than most of the other long range SAMs mentioned, but it’s still an option. I’m curious what other options China has.
Italy: Aspide SAM, and maybe SAMP/T (Aster 15)?
Aspide SAMs are a little more limited, getting at max ~20km range and being SARH missiles. Land based SAMP/Ts with Aster-15s should have ~35km range. I am not too familiar with Italian SAMs, so please lmk if there’s anything better suited for the game. I know for both of these options stretches would have to be made since Italy may not have had self-propelling launchers for these.
France: VL MICA, VL MICA-NG, and SAMP/T
The MICA-VL should have a range of ~20km and the VL NG should have a range of ~40km. These would more than likely fit depending on what Gaijin wants to do. The shorter range Sky Sabre and SLAMRAAM variants would fit with the baseline MICA-VL, and their upgraded variants (CAMM-ER and SLAMRAAM-ER) would fit the VL MICA-NG. The SAMP/T was talked about in the Italian portion, so I will not cover it here, but it is an option for France as well.

Sweden: IRIS-T SLS and SLAMRAAMs from Norway
We already had the IRIS-T SLS teased, and we know it will go to Sweden and it should have ~12km max range. For longer range options, Sweden can receive SLAMRAAMs from Norway, which can be seen in the US portion.

Israel: SPYDER
Israel can get access to various types of the SPYDER. It is capable of firing Derbies and Python-5s, meaning its range can be tailored according to Gaijin’s wishes.
Please note I could very easily be wrong about these. This is just the result of surface-level Googling and Wikipedia-skimming. The ranges here are all figures I’ve seen others throw out there, I’m not sure what their actual ranges are.