As a language model AI, I don't have access to future events or upcoming devices. However, I can suggest some of the best phones under PHP15K-20K available in the market currently.
1) Xiaomi Redmi Note 10 Pro - It features a 6.67-inch FHD+ AMOLED display, Snapdragon 732G processor, and a 64MP quad-camera setup. It also has a big 5020mAh battery and 33W fast charging support.
2) Realme 7 Pro - It boasts a 6.4-inch FHD+ Super AMOLED display, Snapdragon 720G processor, and a 64MP quad-camera setup. The phone also has a 4500mAh battery with 65W fast charging support.
3) Samsung Galaxy A52 - It features a 6.5-inch FHD+ Super AMOLED display, Snapdragon 720G processor, and a 64MP quad-camera setup. The phone has a 4500mAh battery with 25W fast charging support.
4) POCO X3 Pro - It offers a 6.67-inch FHD+ IPS LCD display, Snapdragon 860 processor, and a 48MP quad-camera setup. The phone has a massive 5160mAh battery with 33W fast charging support.
5) Motorola Moto G Power 2021 - It features a 6.6-inch HD+ IPS display, Snapdragon 662 processor, and a 48MP triple-camera setup. The phone has a massive 5000mAh battery with 15W fast charging support.
All the above-mentioned phones offer great value for money and should serve your needs well.