Correct but from 2nd April when they changed the RLMD guideline. However, if applicant can provide other documents from educational institution or from employer that mode of communication is English, it will be counted complete (page 5-RLMD guide). Again to be eligible, candidate must meet CLB5 (RLMD page 4)- in other words, IELTS is mandatory to show english proficiency
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To summarise:
So IELTS General is safest.
IELTS Academic accepted till 1st April
If provided other documents of english proficiency, it will be tough for them to assess whether it is equivalent to CLB5 - so it is risky and also confusing if IELTS is mandatory.