Have read on hotel website (Turtle Bay) that Anguilla is loosening restrictions on April 1st and testing will no longer be required (including when arriving) with vaccination - have not been able to find an "official update". Hoping this is true as heading down in early April.

Has anyone heard anything about this?

The government had a press conference yesterday and said they would be announcing changes “shortly” . They gave no other information. Most likely their definition of “shortly “ will be somewhat longer than yours.

In a previous press conference they explicitly said changes would come April 1st (assume no knew outbreaks). They have not said what that would entail, so people are guessing at this point. But nothing has officially been announced.

This is posted on the Turtle Nest's web site:

As of April 1, 2022 the Government of Anguilla have advised Entry Protocols for Anguilla
for fully vaccinated visitor (s), they are as follows:
 All fully vaccinated travelers (including booster doses if initially vaccinated more
than six months ago) (including returning residents) shall no longer be required to
apply for entry, once presenting evidence of full vaccination with an approved
vaccine and a negative COVID-19 test; NAA/PCR/RNA test within 3 days of travel
and a rapid antigen within 2 days of travel. This information is to be presented to
the aircraft, ship, agent or fixed based operator and again on arrival at the port;
 All visitors 12 years and older are required to be fully vaccinated (including a
booster if initially vaccinated more than 6 months ago). Unvaccinated visitors
under 12 years old are only permitted entry into Anguilla if accompanied by fully
vaccinated adult guardians when travelling. The exemption for pregnant women
is to be removed given that several COVID-19 vaccines are approved for use in
pregnancy.
 Arrival testing is to be discontinued for fully vaccinated persons with a valid pre-
arrival test. Persons without the appropriate test documents will be required to do
an arrival test and quarantine for 4 days at their own expense.
 Unvaccinated returning residents under 5 years old once they are accompanied
by fully vaccinated adult guardians when travelling will not be required to
quarantine, but a Day 4 test will be administered.
 All in transit guests via St. Maarten must complete both INBOUND and
OUTBOUND EHAS (electronic health authorization system) procedures for St.
Maarten via their web site www.stmaartenehas.com