Microsoft has just pushed out an update for low end Lumia devices which includes the Lumia 430, 435, 530, 535, and 532 for both their single and dual SIM versions.
Reports from Windows Phone forums suggest that this is the full changelog:
Latest software release for Lumia 430 Dual SIM is Lumia Denim (02074.00000.15234.280xx/8.10.14234.375):
- Improved WiFi connectivity.
- Improved support for installing apps to a SD memory card.
- Improvements to camera exposure and white balance settings.
- Additional improvements to stability, cellular connectivity, national roaming, and more.
If you have any of the aforementioned devices, do check if the update is available to you.