Lasers will make it onboard earlier than the railgun I think. Power requirement is lower and they’ve been testing similar systems for a lot longer. My prediction is:
1) Type-055A: lEPS with Laser CIWS used in conjunction with traditional CIWS (monster CIWS gun recently disclosed?). Supports Antiship ballistic missiles/ballistic missile interception/ASAT capabilities.
2) Type-055B: IEPS with multilayered missile defense system outlined by Ma Weiming in 2017. Rail launched missiles, long range air defense rail gun, and laser CIWS cover fleet air defense at long, medium, and short range, respectively. Main railgun will be multi role, capable of engaging aerial, naval, and land based targets.