The new package of laws passed by the ruling Justice and Development Party (AKP) is aimed at stopping freedom violation cases from piling up before the European Court of Human Rights (ECtHR).

Crucially, the reform makes a clear distinction between membership of an illegal organisation and producing propaganda for it, which is accepted as long as it does not "legitimise, praise (or) encourage" violence.

The change is expected to prompt the release of a few thousand pro-Kurdish prisoners jailed on suspicion of ties to the PKK, labelled a terrorist organisation by Turkey and much of the Western world.

The reform also abolishes the 20-year statute of limitations for people involved in carrying out torture.

Supporters describe the reform as a "good but insufficient move" to radically improve Turkey's anti-terrorism laws, whose broad wording has led to the jailing of hundreds, including army chiefs, journalists, politicians and academicians.

As of January 31, the ECtHR had received a giant pile of 16,700 applications for cases of rights violations in Turkey to be heard, according to justice ministry figures.

The court has found Turkey guilty of rights violations in 2,521 cases since 1959, Justice Minister Sadullah Ergin told Anatolia news agency on Wednesday.

"The plan includes important revisions that will improve Turkey's record in human rights and freedom of expression," Ergin added.

Opposition parties accuse the government of being soft on terrorists with the reform, which comes amid an ongoing peace plan Ankara is negotiating with Abdullah Ocalan, the jailed leader of the PKK.

Turkey is involved in ongoing peace negotiations to end the PKK's armed campaign for self-rule, which in almost three decades has killed 45,000 people.